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Questions:
- Name the examination.
- List three indications for this examination.
- Where is the orifice of this duct? What would you do if you cannot see the opening during the examination?
- Name the labelled structures.
Answers:
- Submandibular sialography in lateral projection
- Indications for this examination include pain, suspected calculus, xerostomia and swelling
- Orifice of the submandibular duct is at the base of the frenulum of the tongue. If the duct is not visible, a sialogogue (e.g. citric acid) is placed in the mouth to promote secretion of the gland and so render the orifice visible.
- The labelled structures:
- Cannula in the duct
- Submandibular (Wharton) duct
- Ductules
- Angle of mandible
